S
M
T
W
T
F
S
30
89°
74°
31
94°
70°
1
96°
73°
2
96°
73°
3
96°
73°
4
96°
73°
5
96°
66°
6
83°
61°
7
84°
65°
8
86°
64°
9
89°
63°
10
92°
65°
11
90°
61°
12
84°
62°
13
86°
61°
14
87°
66°
15
86°
65°
16
86°
65°
17
82°
64°
18
83°
64°
19
81°
62°
20
79°
61°
21
80°
62°
22
82°
62°
23
81°
62°
24
84°
63°
25
84°
62°
26
78°
61°
27
77°
62°
28
77°
61°
29
76°
60°
30
77°
60°
1
75°
58°
2
75°
60°
3
76°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lexington
Lexington's September 2026 forecast shows daily high temperatures ranging from 75° to 96°, with overnight lows between 58° and 73°. The average high for September is 85° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Lexington. See also: October | November | December.